Since then, several countries have expanded their booster programmes or shortened the gap between jabs to shore up protection against the variant. In India, the booster shot - dubbed a "precaution dose" by Prime Minister Narendra Modi - will be the same vaccine that was given to a person for their first and second doses.





อ่านต่อได้ที่ : โรงเรียนบ้านชัฏหนองหมี

สาระน่ารู้ : เด็ก